1161656 has 8 divisors (see below), whose sum is σ = 2178120. Its totient is φ = 580824.

The previous prime is 1161647. The next prime is 1161659. The reversal of 1161656 is 6561611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72596 + ... + 72611.

It is an arithmetic number, because the mean of its divisors is an integer number (272265).

2^1161656 is an apocalyptic number.

It is an amenable number.

1161656 is a deficient number, since it is larger than the sum of its proper divisors (1016464).

1161656 is a wasteful number, since it uses less digits than its factorization.

1161656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145213 (or 145209 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 1161656 is about 1077.8014659482. The cubic root of 1161656 is about 105.1217333397.

The spelling of 1161656 in words is "one million, one hundred sixty-one thousand, six hundred fifty-six".